EP 0375039 A1 19900627 - Method for the manufacture of pipe from strip steel.
Title (en)
Method for the manufacture of pipe from strip steel.
Title (de)
Verfahren zur Herstellung von Rohren aus Stahlbändern.
Title (fr)
Procédé pour la fabrication de tubes à partir de rubans d'acier.
Publication
Application
Priority
NL 8803084 A 19881216
Abstract (en)
Use of a low carbon continuously cast steel which has an aluminium content less than 0.022 % by weight in the manufacture of pipes is advantageous when making pipes having walls of at least two layers and a diameter typically smaller than 16 mm. The method of manufacture involves successively hot rolling, cold rolling and coppering to produce a strip steel which is then rolled into a pipe having at least two layers. The pipe is then annealed so that the copper seals the two layers together. Such pipes are particularly suitable for hydraulic applications, such as brake lines in cars.
IPC 1-7
IPC 8 full level
B21C 37/06 (2006.01); B32B 15/01 (2006.01); C22C 38/00 (2006.01); F16L 9/16 (2006.01)
CPC (source: EP)
B21C 37/06 (2013.01); B32B 15/01 (2013.01); C22C 38/00 (2013.01); F16L 9/165 (2013.01)
Citation (search report)
- [YD] GB 1123778 A 19680814 - UNITED STATES STEEL CORP
- [A] US 2014983 A 19350917 - QUARNSTROM BERT L
- [A] DE 2757311 A1 19790705 - USUI KOKUSAI SANGYO KK
- [A] DE 1951141 A1 19700506 - TEXAS INSTRUMENTS INC
- [A] DE 1812774 A1 19690703 - BETHLEHEM STEEL CORP
- [YD] METALS HANDBOOK, vol. 1, 9th edition, 1978, pages 321-323, ASM, Ohio, US; "Pressure tubes"
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
DOCDB simple family (application)
EP 89203189 A 19891214; NL 8803084 A 19881216